The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/dom/indexedDB/IDBFileHandle.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,125 @@
     1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* vim: set ts=2 et sw=2 tw=80: */
     1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
     1.8 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.9 +
    1.10 +#include "IDBFileHandle.h"
    1.11 +
    1.12 +#include "mozilla/dom/file/File.h"
    1.13 +#include "mozilla/dom/IDBFileHandleBinding.h"
    1.14 +#include "mozilla/dom/quota/FileStreams.h"
    1.15 +
    1.16 +#include "IDBDatabase.h"
    1.17 +
    1.18 +USING_INDEXEDDB_NAMESPACE
    1.19 +USING_QUOTA_NAMESPACE
    1.20 +
    1.21 +namespace {
    1.22 +
    1.23 +inline
    1.24 +already_AddRefed<nsIFile>
    1.25 +GetFileFor(FileInfo* aFileInfo)
    1.26 +
    1.27 +{
    1.28 +  FileManager* fileManager = aFileInfo->Manager();
    1.29 +  nsCOMPtr<nsIFile> directory = fileManager->GetDirectory();
    1.30 +  NS_ENSURE_TRUE(directory, nullptr);
    1.31 +
    1.32 +  nsCOMPtr<nsIFile> file = fileManager->GetFileForId(directory,
    1.33 +                                                     aFileInfo->Id());
    1.34 +  NS_ENSURE_TRUE(file, nullptr);
    1.35 +
    1.36 +  return file.forget();
    1.37 +}
    1.38 +
    1.39 +} // anonymous namespace
    1.40 +
    1.41 +IDBFileHandle::IDBFileHandle(IDBDatabase* aOwner)
    1.42 +  : FileHandle(aOwner)
    1.43 +{
    1.44 +}
    1.45 +
    1.46 +// static
    1.47 +already_AddRefed<IDBFileHandle>
    1.48 +IDBFileHandle::Create(IDBDatabase* aDatabase,
    1.49 +                      const nsAString& aName,
    1.50 +                      const nsAString& aType,
    1.51 +                      already_AddRefed<FileInfo> aFileInfo)
    1.52 +{
    1.53 +  NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
    1.54 +
    1.55 +  nsRefPtr<FileInfo> fileInfo(aFileInfo);
    1.56 +  NS_ASSERTION(fileInfo, "Null pointer!");
    1.57 +
    1.58 +  nsRefPtr<IDBFileHandle> newFile = new IDBFileHandle(aDatabase);
    1.59 +
    1.60 +  newFile->mFileStorage = aDatabase;
    1.61 +  newFile->mName = aName;
    1.62 +  newFile->mType = aType;
    1.63 +
    1.64 +  newFile->mFile = GetFileFor(fileInfo);
    1.65 +  NS_ENSURE_TRUE(newFile->mFile, nullptr);
    1.66 +  newFile->mFileName.AppendInt(fileInfo->Id());
    1.67 +
    1.68 +  fileInfo.swap(newFile->mFileInfo);
    1.69 +
    1.70 +  return newFile.forget();
    1.71 +}
    1.72 +
    1.73 +already_AddRefed<nsISupports>
    1.74 +IDBFileHandle::CreateStream(nsIFile* aFile, bool aReadOnly)
    1.75 +{
    1.76 +  nsCOMPtr<nsIOfflineStorage> storage = do_QueryInterface(mFileStorage);
    1.77 +  NS_ASSERTION(storage, "This should always succeed!");
    1.78 +
    1.79 +  PersistenceType persistenceType = storage->Type();
    1.80 +  const nsACString& group = storage->Group();
    1.81 +  const nsACString& origin = storage->Origin();
    1.82 +
    1.83 +  nsCOMPtr<nsISupports> result;
    1.84 +
    1.85 +  if (aReadOnly) {
    1.86 +    nsRefPtr<FileInputStream> stream =
    1.87 +      FileInputStream::Create(persistenceType, group, origin, aFile, -1, -1,
    1.88 +                              nsIFileInputStream::DEFER_OPEN);
    1.89 +    result = NS_ISUPPORTS_CAST(nsIFileInputStream*, stream);
    1.90 +  }
    1.91 +  else {
    1.92 +    nsRefPtr<FileStream> stream =
    1.93 +      FileStream::Create(persistenceType, group, origin, aFile, -1, -1,
    1.94 +                         nsIFileStream::DEFER_OPEN);
    1.95 +    result = NS_ISUPPORTS_CAST(nsIFileStream*, stream);
    1.96 +  }
    1.97 +  NS_ENSURE_TRUE(result, nullptr);
    1.98 +
    1.99 +  return result.forget();
   1.100 +}
   1.101 +
   1.102 +already_AddRefed<nsIDOMFile>
   1.103 +IDBFileHandle::CreateFileObject(mozilla::dom::file::LockedFile* aLockedFile,
   1.104 +                                uint32_t aFileSize)
   1.105 +{
   1.106 +  nsCOMPtr<nsIDOMFile> file = new mozilla::dom::file::File(
   1.107 +    mName, mType, aFileSize, mFile, aLockedFile, mFileInfo);
   1.108 +
   1.109 +  return file.forget();
   1.110 +}
   1.111 +
   1.112 +// virtual
   1.113 +JSObject*
   1.114 +IDBFileHandle::WrapObject(JSContext* aCx)
   1.115 +{
   1.116 +  return IDBFileHandleBinding::Wrap(aCx, this);
   1.117 +}
   1.118 +
   1.119 +IDBDatabase*
   1.120 +IDBFileHandle::Database()
   1.121 +{
   1.122 +  NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
   1.123 +
   1.124 +  IDBDatabase* database = static_cast<IDBDatabase*>(mFileStorage.get());
   1.125 +  MOZ_ASSERT(database);
   1.126 +
   1.127 +  return database;
   1.128 +}